Color gradients are now based on hue/chroma/luma (HCY') instead of red/green/blue (RGB).
Small tweaks to altpowerbar.
Elements hide themselves on disable.
Allow layout to override AltPowerBar update.
Use RegisterUnitEvent to replace our home-brew event dispatcher.
Consider any event not matching ^UNIT_ to be unitless.
Wrong condition for unitless in events.lua.

This was causing unit events to be flagged as unitless events.
Reduced copy-pasta in classicons.